fasciculates with adult medial antennal lobe tract antennal lobe projection neuron adult antennal lobe projection neuron medial antennal lobe tract projection neuron AL-mPN FlyBrain_NDB:10448 VFB:FBbt_00067350 FBbt:00067350 Adult antennal lobe projection neuron that fasciculates with the medial antennal lobe tract. There are about 100 of these per tract. Most of these neurons arborize extensively in the mushroom body calyx, whilst the accessory calyx is free from termini. These neurons are cholinergic (Yasuyama et al., 2003). fly_anatomy.ontology inner antennocerebral tract projection neuron mALT projection neuron iPN iACT projection neuron antennal lobe projection neuron iPN